Improvement in rotary presses



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ROTARY PRESS. v I No.170,436. vPatented Nov. 30,1875.

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TES l WILLIAM K. DANIELS, PEABODY, MASSACHUSETTS.y

IMPROVEMENT IN ROTARY PRESSES.

Specification forming part of Letters Patent No. 170,436, dated November 30, 1875; application led August 2, 1875.

To all whom t 'may concern:

Be it known that I, WILLIAM K. DANIELS, of Peabody, in the State of Massachusetts, have invented certain Improvements in Ro tary Presses; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

My improvements relate to a special construction and arrangement of certain parts of the press with a view to a more efficient pressing out and separating the moist or liquid portion from the solid matter. as, for instance, in pressing tan to render it fit for fuel and they l consist, primarily, i'n placing` the three rolls,

which do the feeding, squeezing, and discharging, in such positions and differing relative proximities to each other, as hereinafter described, as not only to insure an even feeding in, but also a forcing of the material so fed over a bridge, and then upward between pressure-rollers, and away from the expressed liquid, which passes downward and backward of the lower of the pressurerollers, and falls away by gravity. They further consist in combinin g with a feeding roller a roller having lon- Y gitudin al corrugations or grooves for securing an even feed, and also transverse scores, either straight or spiral, to allow the free escape of liquids between such roll and the bridge.

Figure l represents a central transverse section; Fig. 2, one end, and Fig. 3 the other end, of a machine embodying my invention; Figs. 4, 5, 6, 7, and 8, different forms of feeding-in rolls 5 and Figs. 9 and l0 styles of bridge.

Ais the frame, and B the hopper, of the press. The rolls are shown in Fig. l at C, D, and E, and as seen they are so disposed that lines drawn from the axisofeither to the axes of the others would form nearly an equilateral triangle. The feed-roll D has the smallest diameter, the delivery-roll E the next, and compressing-roll C is made the largest, whereby,A while in conjunction .with both the others in the acts of feedingV and of squeezing, it shall also permit a wide enough separation of D from E, not only to aiford space for the passage of the material over the vbridge F, and

also an open space, g, between the bridge and E for the free escape by gravity of the liquid expressed by the rolls, but also shall leave 'x rial, but would require that the bridge be placed too low for efcient action, and would also require too much lift to be given to the material before being passed through between G and E. The roll D being the smallest, and the threerolls occupying the triangular position above named, a small space is left between C and D, While C and E are closer, and almost in positive contact.` This l leaves space forV feeding between C and D, and compels a positive nipping action between C and E.

H is a chute or spout, down which the pressed material is passed after leaving the pressing-rolls.

The rolls C D E have each the same surface velocity, and they are driven by appropriate gears i k l, the roll `D by means of its gear lo imparting motion to the others, and itself receiving its motion from the large gear m on its opposite end, through the medium of the pinion a on the short shaft-gear o, which is driven by the pinion p on the shaft g of the driving-wheel r. The journals of rolls G are mounted in boxes s, which are borne down by rubber or other springs t, the pressure being adjustable by means of screws a.

My press is adaptedfor pressing liquids from whole, ground, or granulated substances, say for brewers, distillers, chemists, and druggists7 use.

I claim- 1. In a machine for expressing liquids from solids the combination, with the bridge F, of a feeding-in roll or rolls constructed with longitudinal grooves or corrugations, serving to force and keep an even feed, andwith transverse or spiral scores 'or grooves, serving to allowmthe escape of the expressed `liquidsbeltweenlthe rolls and bridge, substantially as -"sh`own and desuribed.

2; In a. machine for pressing liquidsfrom moist or wet sbstanees, the combination with the solid bridge N, located as described with reference i to the i feeding-roll" D, and `tothe lower discharging'roll E, of the rolls O, D, and E, having the described relative differences e in circumference, and thedesribi` relative 1108i- `tion of `their axes, but'having eacllythe; same surface velocitywhen infaetiou, all `as and for the purposes set forth. e

WILLIAM K. DANIELS.

i Witnesses:

GEORGE L. WALLIS, OSCAR B, HURLBUT. 

